Q. I. $\mathcal{p}O_{2}$ is the major factor which affects the binding of $CO_{2}$ with haemoglobin II. $\mathcal{p}{CO}_{2}$ is low and $\mathcal{p}O_{2}$ is high in tissues III. RBC contains a very high concentration of carbonic anhydrase IV. Every 100 mL of deoxygenated blood delivers approximately 4 mL of $CO_{2}$ to alveoli Select the combination of right statements
A) I, III and IV
B) I, II and IV
C) I, II and III
D) II, III and IV
Explanation
In tissues $\rho CO_{2}$ is high and $\rho O_{2}$ is low $\rho CO_{2}$ in tissues – 45 mm of Hg $\rho O_{2}$ in tissues – 40 mm of Hg Partial pressure of respiratory gases in-mm Hg [table] Respir atory gases | Inspired air on atmos pheric air | Alveolar air | Deoxy genated blood | Oxyge nated blood | Expired air | Tissue cells ; $\rho O_{2}$ $\rho CO_{2}$ | 158 0.3 | 100 40 | 40 45 | 95 40 | 116 32 | 40 45 [/table]
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.